It's likely Lemei and Bird were only considered for lookouts but I'm always on the hunt for information about a camp or temorary structure that was up on one of these. Let me know if you have information. For now, all I've got are the photo survey shots from 1937. It's interesting that these were taken about a month apart.
WillhiteWeb.com - Washington Fire Lookouts
Lemei Rock & Bird Mountain (Lookout Information)
Bird Mountain
Bird Mountain looking North September 16, 1937
Bird Mountain looking Southeast September 16, 1937
Bird Mountain looking Southwest September 16, 1937
Lemei Rock looking North & Northeast October 12, 1937
Lemei Rock looking Southeast October 12, 1937
Lemei Rock looking Southwest October 12, 1937
Lemei Rock
North October 14, 2011
Southeast October 14, 2011
South October 14, 2011
West October 14, 2011
South October 14, 2011
Northeast October 14, 2011
Bird Benchmark 1964
Below: one of the earliest maps (around 1912) had both Bird Mountain and Lemei Rock